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PO442-PO456 codes on an off

Discussion in '1st Gen. Tacomas (1995-2004)' started by taco03Trd, Aug 30, 2022.

  1. Aug 30, 2022 at 10:17 AM
    #1
    taco03Trd

    taco03Trd [OP] 03 rig trd v6

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    Carlos
    Riverside ca
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    Ome 881 5100's jba's looking for more
    Got this codes on my 03 V6 DC on an off but more often now then before every time I fill up .I can smell gas by my filler . About a year ago got new gas cap because the 442 code come on after that was good then recently come came back more times now. I remember seeing someone post part numbers for the seals an hoses about the tank but now I can’t find the tread on this looking for some guidance on this if someone can relate to this issue
    TIA
     
  2. Aug 30, 2022 at 12:35 PM
    #2
    RustFreeLOL

    RustFreeLOL Active Member

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    Last edited: Aug 30, 2022
  3. Aug 30, 2022 at 1:47 PM
    #3
    CrustyTaco

    CrustyTaco Well-Known Member

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    Todd
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    The evap codes can be tricky to track down, there's a lot of parts involved that can leak. If you take your truck to a good mechanic they'll be able to do a smoke test and figure out what's leaking. Or you can do what I did and keep replacing parts until the light goes away. If you took the bed off you might able to visually identify the issue.
     
  4. Aug 30, 2022 at 2:08 PM
    #4
    taco03Trd

    taco03Trd [OP] 03 rig trd v6

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    Riverside ca
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    Ome 881 5100's jba's looking for more
    @CrustyTaco yea I was planning on moving the bed an check for cracks just wanted to have parts ready . I found a good vid on Utube about this issue the tech did a smoke test and found rollover valve was crack an seal also .
     
  5. Aug 30, 2022 at 2:10 PM
    #5
    taco03Trd

    taco03Trd [OP] 03 rig trd v6

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    Carlos
    Riverside ca
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    03 DC prerunner trd v6 2wd
    Ome 881 5100's jba's looking for more
  6. Aug 30, 2022 at 8:18 PM
    #6
    ArizonaBrian

    ArizonaBrian Well-Known Member

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  7. Aug 31, 2022 at 8:17 AM
    #7
    taco03Trd

    taco03Trd [OP] 03 rig trd v6

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    Carlos
    Riverside ca
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    03 DC prerunner trd v6 2wd
    Ome 881 5100's jba's looking for more
    I do have a compresor just not ready to spend to much for one I’ll check air pump one.
     
  8. Aug 31, 2022 at 6:18 PM
    #8
    Dm93

    Dm93 Test Don't Guess

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    If you get your own smoke machine for EVAP testing make sure you get one that puts out no more than 1psi, alot of the cheap smoke testers on Amazon and ebay put out way more than 1psi which can damage EVAP components.
     
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    #8
  9. Aug 31, 2022 at 7:44 PM
    #9
    ArizonaBrian

    ArizonaBrian Well-Known Member

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    The one I posted is 1 psi. I have this model - pretty good quality for the price.
     
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    #9

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